3Dmark running on the Galaxy S4 makes space invaders green with envy.
Josh Miller/CNET
Mobile devices like smartphones and tablets are on a collision course of high graphical performance. We're not at "console quality" just yet, but every few months or so performance seems to take a giant leap forward.

The Samsung Galaxy S4 is the latest mobile graphics prodigy, and while our full review will answer whether it's ultimately worth your money, I'm personally more interested in just how adept its highly advanced internals are. Namely at producing real-time, polygonal, video-game graphics. (Spoiler alert: as smartphones go, it's currently the best at doing this.)

To determine this, I used two different tools: Futuremarks' 3DMark and Kishonti's GLBenchmark 2.7. Each is a synthetic real-time graphics benchmark designed to stress each device's Graphics Processing Unit (GPU).

GLBenchmark 2.7 in action. A very taxing graphics benchmark.
Screenshot by Eric Franklin/CNET
Unfortunately, 3DMark is currently available only for Android, so there'll be no iOS comparisons using that tool. Thankfully, GLBenchmark is fully iOS compatible. But enough of my babbling -- let's get to it. If you're only here for raw numbers, skip down to the "And now, the results (really!)" section.

The setup
OK, these aren't results, but knowing the specs of each of the devices in question is important when putting their results in context. While the GPU is the most important component when rendering complex polygonal graphics, CPU speed, RAM, and the underlying OS also play big parts.

The tests
3DMark's mobile platform test is called Ice Storm and depicts a sci-fi spaceship battle over an ice planet. The 3DMark score is derived from the results of three different tests: two graphics tests made to stress the system's GPU, and one physics test focusing on CPU performance. The tests can be run at both 1,280x720-pixel resolution with normal textures and post-processing (partical effects, highlights, etc.) or at 1,920x1,080 with higher quality textures and post-processing effects. The images are then scaled to the device's native resolution with virtually no performance overhead. Check here for more information on 3DMark.

GLBenchark 2.7 is quite similar in concept; however, the test I've run depicts a motorcyclist being chased by a T. rex through a jungle. The test is run both at the device's native resolution and at a resolution of 1,920x1,080. The test appears to be a lot more taxing than 3DMark.

And now, the results (really!)
Eric Franklin/CNET

The 3DMark score in the first chart is not a unit of measure, but is instead derived using a weighted harmonic mean from both the graphics and physics scores combined, with a higher score indicating faster performance and higher frame rates. The two charts below are presented in frame-per-second.

Eric Franklin/CNET

Eric Franklin/CNET

As you can see, in 3DMark the GS4handily wipes the floor with the GS3, while also beating out the fastest Android tablet, the Nexus 10. The GS4 just squeaks by the HTC One, which is a bit surprising. While each phone houses a Snapdragon 600 with same CPU and GPU model, the one in the GS4 is 200MHz faster than the chip in the HTC One.

What we're probably seeing here is evidence that, with all else being relative, (virtually identical specs on the HTC and GS4), a 200MHz increase from the HTC One's 1.7GHz CPU, just isn't significant enough make a huge difference in graphical performance. The bottleneck likely lies elsewhere, possibly the speed and amount of RAM; however, it can't be said for certain without more testing.

Eric Franklin/CNET

Eric Franklin/CNET

With all devices running at 1080p, GLBenchmark results show the GS4 tied for fastest smartphone, with the iPad 4 edging it out just a bit. The GS4 also beats the iPhone 5 in dramatic fashion. With the devices running at their native resolution, the iPad 4 takes a bit of a tumble and the iPhone 5 -- running at its lower native resolution of 1,136x640 -- makes up some ground, yet the GS4 doesn't budge from the top of the smartphone graphics performance heap.

Device

Resolution

Samsung Galaxy S4

1,920x1,080

Samsung Galaxy S3

1,280x720

Apple iPhone 5

1,136x640

Google Nexus 10

2,560,1,600

HTC One

1,920x1,080

Apple iPad 4

2,048x1,536

The takeaway
It's clear: when it comes to advanced gaming graphics, the Samsung Galaxy S4 is the leader of the smartphone pack, if just barely ahead of the HTC One.

For those of us whose interest leans a bit farther to the geeky side, I think the interesting takeaway is that the extra 200MHz in the GS4's CPU fails to offer any clear performance benefits for gaming graphics. My theory is this: at that level, with that processor, the memory becomes the bottleneck. And in this case, the processor is simply waiting around for the memory to deliver the data it requires to continue performing computations. I can't yet say for certain however.

Still, no matter your level of interest, if you're planning to pick up the Samsung Galaxy S4, you can rest assured that you'll be experiencing the very best that smartphone gaming currently has to offer. Check out the full review for a complete evaluation.